A vehicle, for most administrative purposes, is treated as an extension of a person. It is registered to a name and an address; it is insured against a household; it is associated with a postcode that locates it precisely. The record is created at purchase and grows quietly with use.

Each transaction adds something. A change of keeper updates the keeper field on the register. A change of address updates it again. A move from one insurance policy to another links the vehicle to a new household composition. A service history, in some markets, becomes part of a separate record that follows the vehicle rather than the person.

On its own this is administrative information of no obvious interest. Combined with other records, it becomes one of the most precise locators of a private person available. The address registered against a vehicle is, by definition, the address the person uses; it is updated when they move; it is rarely stale.

The register is not always public, and in some markets it is closely held. But the data is shared with parties whose own systems are less constrained, and the result is that the registered address of a vehicle is among the most leaked addresses associated with private individuals. It surfaces in commercial data, in marketing lists, in incident reports, and in the products of aggregators.

The discreet handling of this category, particularly for a principal whose home address is otherwise carefully managed, is one of the smaller but more useful corrections available. It is rarely the most exposed record in a person's life, but it tends to be one of the most current.